\centering
\begin{tabular}[t]{lccc}
\toprule
\multicolumn{1}{c}{ } & \multicolumn{2}{c}{\makecell[c]{Chose worker in private\\outcome round (=1)}} & \multicolumn{1}{c}{\makecell[c]{Chose trans in private\\outcome round (=1)\\(pairs with trans only)}} \\
\cmidrule(l{3pt}r{3pt}){2-3} \cmidrule(l{3pt}r{3pt}){4-4}
  & (1) & (2) & (3)\\
\midrule
Worker is trans $\times$ 3-person discussion & \num{0.175}*** & \num{0.168}*** & \\
 & (\num{0.022}) [\num{<0.001}] & (\num{2.2e-02}) [\num{<0.001}] & \\
Worker is trans & \num{-0.193}*** &  & \\
 & (\num{0.013}) [\num{<0.001}] &  & \\
3-person discussion & \num{-0.004} & \num{0.002} & \num{0.167}***\\
 & (\num{0.011}) [\num{0.729}] & (\num{1.0e-02}) [\num{0.882}] & (\num{2.0e-02}) [\num{<0.001}]\\
\midrule
Num. observations & \num{13494} & \num{13494} & \num{4498}\\
Num. participants & \num{2249} & \num{2249} & \num{2249}\\
Num. groups & \num{751} & \num{751} & \num{751}\\
Outcome mean$^\dagger$: no discuss (priv.), worker non-trans & \num{0.61} & \num{0.61} & \\
Outcome mean: no discuss (priv.), worker trans & \num{0.42} & \num{0.42} & \num{0.42}\\
\bottomrule

\end{tabular}

